homologous chromosomes stick together in pairs.

prophase I.

During meiosis, segments of nonsister chromatids can trade places. This recombination of maternal and paternal genetic material is a key feature of meiosis. During what phase of meiosis does recombination occur?

Mutation

four types of mutation

Deletion-a piece of DNA is lost, missing,etc.
Duplication- a piece of DNA is add, replicated,more than once
Inversion-a pirce of DNA breaks off and reattaches in reverse order
Translocation-two chromosomes involved a piece of DNA breaks off one chromosomes and attaches to a differant chromosomes

homologous Chromosomes

The two chromosomes that make up a matched pair in a diploid cell. They are of the same length, centromere position, and staining pattern and possess gene for the same characteristics at corrosponding loci. One homologous chromosomeis inherited from the organism's father, and one grom the mother